Skip to Main Content

About Us

The Wasco County gets its name from the Wascopam Indian Tribe. At the time of its creation in 1854, Wasco County was the largest county ever formed in the United States. It stretched from the Cascade Mountains to the Rocky Mountains and from the California border to the Washington border. Its immense size was such that 17 other counties in Eastern Oregon were later formed from the Wasco County. The City of The Dalles became the county seat at the time the county was created. It remains there today with the beautiful historic courthouse that was built in 1914.
Information from the Oregon Secretary of State Archives Division and the Oregon Blue Book.

For contact information and courthouse location, please see the Contact Us and Courthouse Location pages.